1. 
On planet X, the atmospheric pressure is lower than it is on planet Y. Interplanetary probes were recently sent to the two planets and data were obtained on many things including the atmospheric pressure. The pressure on planet Y is 16 N/m^{2}. If the pressure on planet X is a third that of planet Y, what is the pressure, in Pascals, on planet X? Round your answer to the nearest hundredth if necessary.


2. 
* This is a premade sheet. Use the link at the top of the page for a printable page. 

3. 
Christina dropped rock 1 (mass = 3.4 kg) from a height of 13 meters. She then dropped rock 2 (mass = 2.7 kg) from the same height. What was the ratio of kinetic energies of the rocks (KE_{rock1}/KE_{rock2}) when they hit the ground? (note: the acceleration of gravity is 9.81 m/s^{2}.)


4. 
Olivia is trying a new fuel formula in her gokart. In her first trial, fuel mixture A resulted in a maximum speed of 24 miles per hour on a flat smooth road. On the same road, mixture B resulted in a maximum speed of 48 miles per hour. Mixture B appears to increase the maximum speed of the gokart by what factor? Express your answer as a ratio of speeds.


5. 
If the ratio of difficult physics problems to easy physics problems in a book is 3 to 3, how many easy problems are there if there are 340 problems in the book? Round your answer to the nearest whole number if necessary.


6. 
Zachary calculated the mass of a toy car to be 24.5 grams. William calculated the mass of the same car but made an error and obtained a mass that was greater than Zachary's by a ratio of 5 to 2. What was William's calculation for the mass of the car?

